A parliamentarian is a member of a parliament, the body that makes a country’s laws. The word often points to someone who has been there a long time and knows the work well, not a brand-new member. In Britain and many other countries that is the everyday sense: a lawmaker, especially a skilled one.

A parliamentarian is a member of a parliamentparliamentarian指的是國會的成員, the body that makes a country's laws國會是制定一國法律的機構。The word often points to someone who has been there a long time and knows the work well這個字通常指那種已經待很久、很懂議事工作的人，not a brand-new member而不是剛上任的新成員。In Britain and many other countries that is the everyday sense在英國和許多其他國家，這是日常的用法：a lawmaker, especially a skilled one指立法者，尤其是資深熟練的那種。

Though actually, in the United States people also use parliamentarian for a different job: the person who knows the rules of a meeting so well that they tell the chair what is allowed. That person may never have been elected. So the same word can mean “experienced lawmaker” or “rules expert,” depending on where you are.

Though actually, in the United States people also use parliamentarian for a different job不過其實，在美國，parliamentarian還有另一種用法：the person who knows the rules of a meeting so well that they tell the chair what is allowed指那種非常熟悉會議規則、能告訴主席什麼可以做的人。That person may never have been elected這個人可能從來沒有經過選舉。So the same word can mean "experienced lawmaker" or "rules expert,"所以同一個字可以指「資深立法者」，也可以指「議事規則專家」，depending on where you are要看你在哪個地方。

It is a formal, news-and-textbook word.

It is a formal, news-and-textbook word這是個正式的字，常出現在新聞和教科書裡。